<template>
	<view>
		<my-search @my-click="gotoSearch"></my-search>
		
		<view class="scroll-view-container">
			<scroll-view scroll-y="true" :style="{height:wh +'px'}" class="scroll-view-left">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['scroll-view-left-item',i===active?'active':'']" @click="activechanged(i)">{{item.cat_name}}</view>
				</block>
			</scroll-view>
			<scroll-view scroll-y="true" :style="{height:wh +'px'}" class="scroll-view-right" :scroll-top="scorllTop">
				<view class="scroll-view-right-item" v-for="(item2,i2) in catelevel2" :key="i2">
					<view class="cate-lv2-title">{{item2.cat_name}}</view>
					<view class="cate-lv3-list">
						<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon"></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgemix from '@/mixins/tabbar-badge.js'
	export default {
		mixins:[badgemix],
		data() {
			return {
				wh:0,
				cateList:[],
				active:0,
				//二级分类数组
				catelevel2:[],
				scorllTop:0
			};
		},
		onLoad() {
			const sysInfo = uni.getSystemInfoSync()
			this.wh = sysInfo.windowHeight - 50
			this.getCateList()
				
		},
		methods:{
			async getCateList(){
				const {data:res} =await uni.$http.get('/api/public/v1/categories')
				if(res.meta.status!==200) return uni.$showMsg()
				this.cateList = res.message
				//为二级分类赋值
				this.catelevel2 = res.message[0].children
			},
			activechanged(i){
				this.active = i
				//重新为二级分类赋值
				this.catelevel2 = this.cateList[i].children
				if(this.scorllTop === 0){
						this.scorllTop = 1
					}else{
						this.scorllTop = 0
					}
			},
			// 跳转到商品列表页面
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid=' + item.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
			
			
			
		}
		
	}
</script>

<style lang="scss">
	.scroll-view-container{
		display: flex;
		
		.scroll-view-left{
			width: 120px;
		}
	}
	.scroll-view-left-item{
		background-color: #f7f7f7;
		line-height: 60px;
		text-align: center;
		font-size: 12px;
		position: relative;
		
		&.active{
			background-color: #FFFFFF;
			
			&::before{
				content: ' ';
				display: block;
				width: 3px;
				height: 30px;
				background-color: #c00000;
				position: absolute;
				top: 50%;
				left: 0;
				transform: translateY(-50%);
			}
		}
	}
	.cate-lv2-title{
		font-size: 12px;
		font-weight: bold;
		text-align: center;
		padding: 15px 0;
	}
	.cate-lv3-list{
		display: flex;
		flex-wrap: wrap;
		
		.cate-lv3-item{
			width: 33.33%;
			display: flex;
			flex-direction: column;
			justify-content: center;
			align-items: center;
			margin-bottom: 10px;
			image{
				height: 60px;
				width: 60px;
			}
			text{
				font-size: 12px;
			}
		}
		
	}
	
	
</style>
